This alert expired on 10 May 2026 at 01:15 UTC. It is kept here as a record.
It is the 5th strongest of the 9 detections recorded within 20 km of this point since 10 May 2026.
What the source measured
NOAA reported: Special Marine Warning issued May 9 at 8:09PM EDT until May 9 at 9:15PM EDT by NWS Buffalo NY
An estimated 69,479 people live within 50 km of this point.
Nearby, since 10 May 2026
- May 16, 2026 · score 39 · 3.7 km
- July 18, 2026 · score 43 · 7.2 km
- September 2, 2026 · score 57 · 12.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 79 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 39 / 100 |
| Our confidence | 79% |
| Coordinates | 43.4087, -77.0347 |
| Nearest City | Oswego (43 km) |
| Population Exposed | 69.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-10T00:09:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.bf40c30d89db4ac4af7699ee2830bf42ce5baa87.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Hamlin Beach to Sodus Bay NY; Sodus Bay to Mexico Bay NY; Hamlin Beach to Sodus Bay NY beyond 5NM off shoreline to US-Canadian border; Sodus Bay to Mexico Bay NY beyond 5NM off shoreline to US-Canadian border |
| Headline | Special Marine Warning issued May 9 at 8:09PM EDT until May 9 at 9:15PM EDT by NWS Buffalo NY |
| Expires | 2026-05-09T21:15:00-04:00 |
| SenderName | NWS Buffalo NY |
| HasExactCoords | true |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.